Shake like crazy to combine (necessary to get the hazelnut milk suspended; otherwise it can be a bit grainy) and pour unstrained into your glass of choice. Or, whatever, you could strain it over fresh ice, but you only need to if the little ice chips bother you.

* I can't quite remember, but I think it was a Kickapoo blend, maybe Driftless Dark? The flavor profile sounds about right.** Full disclosure: I also initially tried a version with blackberry shrub instead, and... no. Just don't.